[Users] virt-manager migration

[Ryan Barry]

 > From: "Jeremiah Jahn" <jeremiah at goodinassociates.com>
 > To: users at ovirt.org
 > Sent: Wednesday, April 2, 2014 8:38:02 PM
 > Subject: [Users] virt-manager migration
 >

 > Anyway, long story short. I'm having a difficult time finding 
documentation
 > on migrating from virt-manager to oVirt. As well as installing 
ovirt-nodes
 > manually. I'd love to find this perfect world where I can just 
install the
 > ovirt-node RPMs on my already running Hosts and begin to have them 
managed
 > by the oVirt engine. Without and serious downtime.

The usual way is to go through virt-v2v. Essentially, you'd install the 
engine somewhere and configure a storage domain (the properties of which 
vary, but it's UUIDed and the UUID must match the engine) to bring the 
datacenter up, then add an export domain (which is also UUIDed).

Once an export domain is created, virt-v2v can move your VMs over, but 
with downtime.

As far as turning your existing hosts into nodes, adding them from the 
engine is the easiest way (there's a wizard for this). It's possible to 
install the ovirt-node RPMs directly, but they take over your system a 
bit, and it's probably not what you're looking for. The engine can 
manage regular EL6/fedora hosts.

But registering to the engine will reconfigure libvirt, so the general 
path is:

Install engine.
Live-migrate VMs off one of your hosts.
Add that host as a node.
virt-v2v machines than can take downtime (can you get a maintenance window)?
Bring them up on the new node.
Repeat until your environment is converted.